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All results from a given calculation for COHBr (Formyl bromide)

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-2672.923952
Energy at 298.15K-2672.927971
HF Energy-2672.923952
Nuclear repulsion energy145.182253
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3288 2968 29.41      
2 A' 1913 1727 372.87      
3 A' 1478 1334 99.13      
4 A' 711 642 177.06      
5 A' 407 367 3.46      
6 A" 1042 940 2.30      

Unscaled Zero Point Vibrational Energy (zpe) 4419.4 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 3989.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HF/3-21G*
ABC
2.54406 0.13675 0.12977

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.374 -1.183 0.000
O2 -0.461 -2.025 0.000
H3 1.439 -1.339 0.000
Br4 0.000 0.704 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.18551.07581.9242
O21.18552.01982.7674
H31.07582.01982.4984
Br41.92422.76742.4984

picture of Formyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 C1 H3 126.498 O2 C1 Br4 123.992
H3 C1 Br4 109.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.308      
2 O -0.470      
3 H 0.260      
4 Br -0.097      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.122 0.440 0.000 2.167
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.598 -4.107 0.000
y -4.107 -31.893 0.000
z 0.000 0.000 -29.084
Traceless
 xyz
x 1.891 -4.107 0.000
y -4.107 -3.051 0.000
z 0.000 0.000 1.161
Polar
3z2-r22.322
x2-y23.295
xy-4.107
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.175 -0.001 0.000
y -0.001 5.764 0.000
z 0.000 0.000 2.064


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000